I have had J in size 4 (9-12 mos) since he's been wearing shoes because that way he could grow into them... he still fits them just fine. He needs some sandals for summer and I found a good deal on some shoes for fall and I am hesitant about which size to get - stick with 4 or should I bump up to 5?
How quickly did your baby/toddler's feet grow? At age 18 mos, what size were they in? J's feet are almost exactly 4".